Here’s a round-up article on why it’s all right for individuals to blog about topics that are covered in other people’s blogs.
I want to point out the third point in this article. Authors of nonfiction know they should be recognized as experts in a specific area. But fiction authors often are never told that they, too, should present themselves as experts!
This can be a key component in your marketing. A mystery with a cat as the protagonist means the author can blog about everything cat related. The author of a medical thriller can write about how to avoid the next flu epidemic. Works set in exotic or unique locations allow the author to write travel articles for different sites.
And every time you write an article, blog, essay or service tip about that topic, your bio can mention that you cover the same topic in your book. Yes, it’s unconventional and yes, it works!